2014 Chevrolet Malibu 2.5l p305f

P305f dual battery control module

[@antoniomadrigal3545]

The auxiliary battery in the trunk of my 2014 Malibu only has 10V. I think I'll have to change it 😅

[@antonioaguirre6166]

yes, at 10v it will give you some problems

[@Elle-tokahbaby]

You don't need to disconnect the mega fuse wires unless you are Changing theat module which is the dual battery control module

[@chotobigboy9365]

check your air intake bolts they come loose after a while ,5 of them ,will send p code ,its not your o2 sensor its loose intake bolts .common for these cars

[@antonioaguirre6166]

@@chotobigboy9365 I bout this car at the auction and it sat for a long time before I got to it. I sold it to my friend and I ended up replacing the two batteries. It runs fine now

[@Elle-tokahbaby]

I changed my main battery. The code went away for a week or two. Than it came back on. It could be the auxiliary battery needs to be replaced or the dual battery control module needs to be replaced

[@antonioaguirre6166]

the customer came back a month later and I had to changed the auxiliary battery as well

[@antonioaguirre6166]

after I replaced the axillary battery, he didn't have a problem.

[@Elle-tokahbaby]

@@antonioaguirre6166 that's what I'm doing today.

[@Elle-tokahbaby]

Great point about the alternator load

[@antonioaguirre6166]

thank you for watching like and subscribe it helps the channel

[@paulgoldston6291]

Problem is not the main battery it's the little oxiliary battery in the trunk

[@antonioaguirre6166]

if your main battery is up to specs then yes, replace the little battery.